Category: Solar System

Our solar system

What can ripples in spacetime reveal about black holes? Quite a bit, it turns out

NeRD

Cosmic echoes from some of the universe’s most violent collisions are far more nuanced than scientists had realized, according to new research. Like the lingering chime of a struck bell, tiny ripples in the fabric of spacetime are created when massive objects like black holes spiral toward each other and merge into a single, larger black hole. These ripples are known as “gravitational waves,” and astronomers rely on theoretical models to decode the waves’ faint signals, both in the final moments leading up to the merger and in the aftermath.…

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See a wafer-thin crescent moon leapfrog Jupiter this week

NeRD

The delicate form of the crescent moon is set to draw close to the planet Jupiter in the post-sunset sky on April 29, before later making its closest approach to the gas giant from the perspective of Earth on April 30. Earth’s moon is currently emerging from its April 27 new moon phase, during which it passed between the sun and Earth, causing its shadow-drenched disk to be temporarily lost from sight in the sun‘s glare. In the coming days the moon will form a waxing crescent, which will grow…

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40-year-old spy satellite photos are helping find forgotten land mines in Cambodia

NeRD

Declassified images from U.S. military satellites are helping find forgotten mine fields in Cambodia. From the late 1960s almost until the end of the 1990s, a bloody war between communist groups and democracy defenders raged, with a few short breaks, in the jungles and on the rice fields of Cambodia. The conflict left behind a hidden legacy that keeps increasing the war’s death toll to this day. Over 10 million anti-personnel and anti-vehicle mines and other explosives may have been scattered across Cambodia’s land during the decades of fighting. Over…

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Brand-new Falcon 9 rocket sends 23 Starlink satellites to orbit on SpaceX’s 2nd launch of the day

NeRD

SpaceX sent another batch of Starlink satellites to orbit tonight (April 28), its second liftoff of the day. A Falcon 9 rocket carrying 23 Starlink broadband satellites — including 13 with direct-to-cell capability — lifted off from NASA’s Kennedy Space Center in Florida tonight at 10:34 p.m. EDT (0234 GMT on April 29). It was the second Starlink group to fly today; a Falcon 9 lofted 27 of the internet craft from California’s Vandenberg Space Force Base earlier today. You may like The Falcon 9’s first stage rests on the…

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Newly launched NASA satellites open eyes to start studying ‘auroral electrojets’ in Earth’s atmosphere

NeRD

The first bits of data have come back from the trio of small satellites that make up NASA’s EZIE (Electrojet Zeeman Imaging Explorer) mission, which aims to solve some mysteries surrounding the “auroral electrojet” phenomena in our atmosphere. The “first light” observations are promising, and NASA says the EZIE satellites are “poised to reveal crucial details about Earth’s auroral electrojets.” After launching March 14 from California’s Vandenberg Space Force Base on SpaceX’s Transporter 13 rideshare mission, EZIE’s three suitcase-sized cubesats now orbit a few hundred miles above Earth in a…

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Scientists use the JWST to study an extremely ancient galaxy piercing through the Cosmic Dark Ages

NeRD

Astronomers have caught an immensely ancient galaxy piercing the veil of darkness that shrouded the early universe. It’s surprising any light from distant galaxy JADES-GS-Z13-1-LA reached Earth at all. Photons coming from the realm that recently landed on the James Webb Space Telescope‘s mirrors existed when the universe was just 330 million years old — and, at that point in its adolescence, the universe was foggy and dim. A dense haze of gas suffused the space between stars, and even between galaxies, absorbing starlight and muffling the whole universe in…

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SpaceX launches 250th Starlink satellite mission, lands rocket at sea (photos)

NeRD

SpaceX launched a milestone mission on Sunday night (April 27). A Falcon 9 rocket carrying 23 of the company’s Starlink broadband satellites — including 13 with direct-to-cell capability — lifted off from Florida’s Cape Canaveral Space Force Station on Sunday at 10:09 p.m. EDT (0209 GMT on Monday, April 28). It was the 250th time SpaceX had sent a batch of Starlink craft skyward, the company noted via X shortly after launch. You may like A screenshot of the Falcon 9 lifting off on April 27, 2025. (Image credit: SpaceX)…

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Trump administration cancels lease for NASA’s Goddard Institute for Space Studies lab in New York City

NeRD

It would appear that the latest wave of U.S. federal program cuts fueled by the Trump administration has affected NASA’s Goddard Institute for Space Studies (GISS) lab in New York City, a branch of the agency dedicated to studying climate change and other Earth sciences. On Friday (April 25), news outlets such as CNN and SpaceNews reported that GISS’s lease on office space in a Columbia University building in Manhattan’s Upper West Side is set to be canceled. According to SpaceNews, an April 24 email sent to Goddard employees and…

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Faint Neptune joins Venus and Saturn to form a planetary triangle in the pre-dawn sky on April 28

NeRD

The predawn hours of April 28 will see a planetary triangle form in the night sky, as Venus makes a close approach to Saturn following a conjunction, while Neptune, invisible to the naked eye, will sit just a few degrees away towards the horizon. Saturn and Venus will be below the horizon for viewers in the U.S. when they reach the point of conjunction in the hours before their appearance on the morning of the 28th. A planetary conjunction occurs when two worlds share the same right ascension  —  a…

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Meet the ‘Doctor Who’ actors who brought the retrofuturistic robots to life for season 2’s ‘The Robot Revolution’ (interview)

NeRD

Stomping around in bulky retro-style robot suits filming the opening episode of “Doctor Who” Season 2 might have seemed like fun, but for professional creature artists Stephen Love and Rob Strange it can be quite hazardous… especially if you topple over! “When you fell, you just had to surrender to it and wait until you stopped rolling around,” Strange reveals. “It felt very safe, but it looked pretty dramatic.” Love and Strange are the main puppeteer actors inside the old-fashioned android costumes for “The Robot Revolution,” which kicked off Ncuti…

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